Paster for cigarette machines



Dec. 29, 1931. R. E. RUNDELL FASTER FOR CIGARETTE MACHINES Filed Nov. 20, 1930 R VMI/ VIII/l l MAM NM ATTORN EY R kw Q Q mm Patented Dec. 29, 1931 UNITED STATES PATENT'OFFICE. I

RUPERT MACHINE & FOUNDRY COMPANY, A CORPORATION 01 NEW JERSEY marina 1'03 oremrrn mcnmas Application'flled November 20, 1980. Serial No. 407,005.

This invention relates to cigarette pasters for continuous rod cigarette machines, its main object being to provide means for continuously refillin the paste reservoir at constant pressure w ile the machine is In operation so as to make it unnecessary to stop the machine for replenishing paste. Wit

this and other objects not speclfically men-' tioned in view, the-invention consists in certain ,COIlStI'llCtlOIlS and combinations which will be hereinafter fully described and then specifically set forth in the claims'hereunto appended. I

In its preferred form, the pastor of a modern cigarette machine consists of a rotating paster disk which receives paste under pressure to the upstanding edge of the cigarette paper before it is folded down to form the finished cigarette rod. Accordingly, the main purpose of the present invention is to enable the continuous replenishment of the paste without interfering with the-maintenance of the proper pressure in the paste reservoir.

To accomplish the above object the paste, in the present invention, is su lied to the paste reservoir by two remova e cylinders, each connected to the reservoir through a valve. The paste is emptied from each cylinder by a continuously driven piston so arranged that each piston can be connected to the drive or disconnected from it independently, thereby enabling the simultaneous operation of both pistons as well as the separate automatic or manual operation of each. Ordinarily, only one of the pistons is running, the other cylinder being the spare which is placed in position, but with its valve to the paste reservoir closed. When the first cylinder is nearly empty, as will be seen from the position of its piston rod, the valve of the second cylinder is opened and its piston is started so that now both cylinders supply paste. As soon as the piston of the second cylinder has advanced sufliciently to feed the paste with the proper pressure, the valve of the first cylinder is closed and its piston disconnected so that it can be removed for refilling. To prevent spilling of paste during replacement of the cylinders, they are profrom a reservoir and applies the same vided near their open ends with interior circumferential grooves and a slot through which a removable ate may be inserted and which is removed ar ter the cylinder has been connected to the reservoir.

In the accompanying drawings which form a part of this specification and in which like characters of reference indicate the same or like parts:

Fig. 1 is a sectional plan view of the improved paster, and

Fig. 2 is a sectional elevation of the same taken on line 2-2 of Fig. 1.

In carrying the invention into effect, there is provided a paste wheel for applying paste to a cigarette rod, a paste reservoir, valves, controlling ingress of paste into the reservoir, a paste drum arranged to receive paste from the reservoir, and a duplex paste feeding unit connected to the valves in the reservoir. In the best constructions contemplated, said duplex paste feeding unit inclu es two removable cylinders adapted to contain paste and independently connected to the valves in the reservoir, a piston mounted in each of the cylinders, a piston rod connected to each of said cylinders and provided with a threaded portion, a driven gear loosely mounted on each piston rod, split nuts connected to said gears, and devices for pressing said split nuts into engagement with the threaded portion of either of the piston rods, whereby to continuously feed paste to the reservoir at constant pressure while one of the cylinders is removed to be refilled. These various means and parts may be widely varied in construction within the scope of the claims, for the articular device selected to illustrate the mvention is but one of many possible embodiments of the same. The invention, therefore, is not to be restricted to the specific construction shown and described.

Referring to the drawings, 0 is an open cigarette rod to which paste is to be applied .by the paste wheel 5 from the paste drum 6 which is mounted on the bottom of the paste reservoir 7, the paste reaching the center portion of its circumferences through a narrow slot 8 in the bottom of the reservoir. The paste wheel 5 is supported by an arm 9 of the E. BUNDELL, OF ROCKVILLE GENTEB, NEW YORK, AB SIGNOB TO AMERICAN frame and is driven by the pulley 11 from the belt 12. The paste drum 6 is revolved by shaft 13 supported by bearings 14 of frame 10, the shaft 13 being driven at the proper sfiqeld from the drive of the cigarette ma- The reservoir 7 is provided at each side with a valve 15 into which is fitted the nipple 16 of one of the paste cylinders 17, the nip les 16 being adapted to screw into the out ets 18 of the cylinders. Each cylinder has a handle 19 and at their open ends the cylinders have squared ends 20 adapted, by means of slots 21, to receive a removable gate 22, the slots 21 being placed at such distance from the open end of the cylinder as to permit the iston 23 to be inserted within the cylinder bore when the gate 22 is in place.

The piston rods 24 are threaded and are thus adapted to be engaged by the spllt nuts 25 carried in slots in the ends of sleeves 26 which are attached to worm gears 27 and journaled in bearings 28 of housing 29 which forms part of the frame 10. The worm gears 27, as well as the sleeves 26, are bored to permit the free passage of the piston rods 24, and the worm gears are driven by a worm 30 mounted on a shaft 31 rotated at the proper speed from the cigarette machine drive. Concentric with-the bores for the passage of the piston rods, the gear housing 29 is provided with seats 32 fitted to receive the squared ends 20 of the cylinders 17. Pins 33 protruding from the piston rod bores of housing 29 engage with slots 34 in the rods 24, thereby preventing the same from turning with the split nuts 25.

The s lit nuts 25 are suspended from the ends of bent levers 35 connected to the split nuts by a pin and slot connection and pivoted in grooves of the sleeves 26 in such a manner as to be operable by means of collars 36 riding on sleeves 26, the collars 36 being actuated by shift levers 37 pivoted in lugs 38 of housing 29.

The operation of this device is as follows: Paste is supplied under constant pressure, due to the continuous advance of piston rod 24, from one of the cylinders 17 through the valve 15 into the reservoir 7 from which the drum 6 delivers it to the circumference of the rotating disk 5 by which the paste is applied to the edge of the cigarette rod C. When the position of the free end of piston rod 24 indicates cylinder 17' is nearly empty, the valve 15 of the second cylinder 17 is opened and the shift lever 37 is moved to press the split nuts 25' into engagement with the piston rod, as shown in dotted lines in Fig. 2. whereupon the second cylinder will commence to feed paste. Assoon as the pressure in the latter cylinder has built up, the valve 15 of the first cylinder is closed and its shift lever moved into disengagement, so that now the piston rod 24 can be pulled 1,sas,11a

outward until the piston 28 is stopped by the gear housing 29. When the nipp e 16 is screwed sufiiciently deep into outlet 18, the cylinder 17 can be lifted out by the handle 19. Upon refilling, the gate 22 is inserted into the slot 21 so as to prevent spilling during replacement, which 18 carried out by lacing the squared end 20 in the seat 82 an unscrewing ni ple 16 into engagement with valve 15. en then the gate 22 is removed, the spare cylinder is read to be thrown into action by pressing the sp 't nuts 25 into engagement with the piston rod 24 b means of the lever 37. Since at least one o the valves 15 is open to a workin piston at any time and since the paste cham r 7 is always closed to an empty or non-operating cylinder, the proper pressure for feeding the paste is maintained at all times so that the cigarette machine can be kept running during refilling and replacement of a cylinder.

What is claimed is 1. In a cigarette rod tion with a paste wheel for applying paste to a cigarette rod, of a paste reservoir, valves controlling ingress of aste in said reservoir, a paste drum arranged to receive paste from said reservoir and su ply it to said wheel, and a duplex paste fee ing unit including two removab e cylinders adapted to contain paste and independently connected to said valves, whereby paste is continuously sup lied to said reservoir at constant pressure w iile one of said cylinders is removed to be refilled.

2. In a cigarette rod paster, the combination with a paste wheel for applying paste to a cigarette rod, of a paste reservoir, valves controlling ingress of aste in said reservoir, a paste drum arrange to receive paste from said reservoir and su ply it to said wheel, and a duplex paste fee ing unit including two removable cylinders adapted to contain paste and independently connected to said valves.

whereby paste is continuously sup lied to said reservoir at constant pressure w ile one of said cylinders said reservoir bein its bottom and said. slot.

3. In a cigarette rod aster, the combination with a paste wheel f r applying paste to a cigarette rod, of a paste reservoir, valves controlling ingress of paste in said reservoir, a paste drum arranged to receive paste from said reservoir and supply it to said wheel, and a duplex paste feedin unit including two removable cylinders a apted to contain paste and independently connected to said valves, whereby paste is continuously supplied to said reservoir at constant pressure while one of said cylinders is removed to be refilled, said duplex paste feeding unit including a housing on which one end of said cylinders is removabl fitted, ni ples provided on the other end of said cyiinders for provided with slot in rum being fitted into said paster, the combinais removed to be refilled,

III

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removably connecting said cylinders to said valves, a piston mounted in each of said cyl-- inders, a piston rod secured to each of said pistons and provided with a threaded portion and a longitudinal slot, a stationary pin engaging said slot, a worm gear loosely mounted on each of said piston rods and supported by said housing, a worm meshing with and driving both of said worm gears, a sleeve attached to each of said worm gears, split nuts carried by each of said sleeves, levers connected to said split nuts and pivoted on said sleeves, collars slidably mounted on said sleeves and engaging said levers, and a shift lever for sliding said collars along said sleeves to press said split nuts into engagement with the threaded portions of said piston rod to move said pistons forward in said cylinders, whereby paste may be fed from either of said cylinders to provide a continuous paste feed to said reservoir at constant pressure while one of said cylinders is removed to be refilled.

4. A duplex paste feeding unit including a housing, two cylinders adapted to contain paste and each having one end reniovably fitted on said housing and provided with outlets at the other end, a piston mounted in each of said cylinders, a piston rod secured to each of said pistons and provided with a threaded portion and a longitudinal slot, a stationary pin engaging said slot, a worm gear loosely mounted on each of said piston rods and supported by said housing, a worm meshing with and driving both of said worm gears, a sleeve attached to each of said worm gears, split nuts carried by each of said sleeves, levers connected to said split nuts and pivoted on said sleeves, collars slidably mounted on said sleeves and engaging said levers, and a shift lever for sliding said collars along said sleeves to press said split nuts into engagement with the threaded portion of said piston rod to cause said pistons to move forward in said cylinders, whereby to feed paste at constant pressure from either of said cylinders while the other cylinder is removed to be refilled.

5. A duplex paste feeding unit including a housing, two cylinders adapted to contain paste and each having one end'removably fitted on said housing and provided with out lots at the other end, a piston mounted in each of said cylinders, a piston rod secured to each of said pistons and provided with a threaded portion and a longitudinal slot, a stationary pin engaging said slot, a worm gear loosely mounted on each of said piston rods and supported by said housing, a worm meshing with and driving both of said worm gears, a sleeve attached to each of said worm gears, split nuts carried by each of said sleeves, levers connected to said split nuts and pivoted on said sleeves, collars slidably mounted on said sleeves and engaging said levers, and a shift lever for sliding said collars along said sleeves to press said split nuts into engagement with the threaded portion of said piston rod to cause said pistons to move forward in said cylinders, whereby to feed paste at constant pressure from either of said cylinders while the other cylinder is removed to be refilled, each of said cylinders being provided with a removable gate adapted to prevent spilling of the paste from the refilled cylinder while the latter is being replaced in the feeding unit.

6. A paste feeding unit, comprising a cylinder adapted to contain a supply of paste, a nipple mounted on said cylinder and adapted to removably connect said cylinder to a paste reservoir, a piston mounted in said cylinder, a piston rod secured to said piston and having a threaded portion and a longitudinal slot, a stationary pin engaging said slot, a

driven gear loosely mounted on said piston rod, split nuts connected to said gear, and a device for forcing said split nuts into engagement with the threaded portion of said piston rod, whereby to feed paste from said cylinder through said nipple.

7. In a cigarette rod paster, the combination with means for receiving paste and applying it to a cigarette rod said means including a paste reservoir provided with a plurality of inlet openings, of a plurality of removable paste feeding units adapted to contain paste and independently connected to said inlets to supply paste to the reservoir, and mechanism for closing one inlet openingand disconnecting the corresponding unit while paste is being supplied by another of said units to continuously maintain paste pressure in said reservoir.

8. In a paster, the combination with means for receiving paste and applying it to a moving object to be pasted said means including a paste reservoir provided with a plurality of inlet openings, of a plurality of removable paste feeding units adapted to contain paste and independently connected to said inlets to supply paste to the reservoir, and mechanism for closing one inlet opening and disconnecting the corresponding unit while paste is being supplied by another of said units to continuously maintain paste pressure in said reservoir.

In testimony whereof, I have signed my name to this specification.

RUPERT E. RUNDELL. 

